Ehrenfeld, David W. <br/><br/>
Conserving life on earth 

 - New York :  Oxford University Press.  1972/ 
 - xv,360p.;  ill.;  24cm 
<br/><br/><label>ISBN: </label>0-19-501598-3 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Stems<br/>Biology
<br/><br/><label>Dewey Class. No.: </label>575.4  / EHR